It looks as though, after Maine, game is over. (Hillary's campaign expected a comfortable win. And they lost huge)! With 99 percent of precincts reporting, Obama was leading Hillary 59% to 40%!.
Clinton also, replaced her campaign manager Patti Solis Doyle with longtime adviser Maggie Williams, her campaign announced Sunday.
Joe Trippi, an adviser to former Democratic contender John Edwards, said Sunday that Obama had "a full head of steam" after Saturday's wins and was poised to win this week's "Potomac Primaries" in Maryland, the District of Columbia and Virginia. "It's hard to see a win for Sen. Clinton into March, into Ohio and Texas, which I think was what they're counting on," Trippi told CBS' "Face the Nation." "But even that's in jeopardy, I think, as Obama builds some momentum here."
Update (Feb 13, 07): BBC web today posted an article by almost the same title (Game over?).
Update (Feb 25, 07): Robert Novak also takes the same view.